Machine for securing armature windings



Jan. 30, 1923. 1,443,526 J. F. CULLIN. MACHINE FOR lSECUFHNG ARMATURE WlNDINGs. l

FILED JULY 18. 1321y 2 SHEETS-SHEET l ,nllummmnnj Jan. 30, i923. l,443,526

J. F. CULLIN. n

MACHINE FOR SECURING ARMATURE WINDINGS` FILED JULY 18. 1921 V`2 SHEETS-SHEET 2 AT ORNEY.

Patented `lan. 30, 1923.

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JASPER F. CULLIN, 0F DETROIT, MICHIGAN, ASSIGNOR TO WILLIAM J'. HARTWIG, 0F DETROIT, MICHIGAN.

MACHINE FOR SECURING AIR/MATURE WINDINGS.

Application led July 18,

To all 'whomz't may concern:

Be it known that I, JASPER F. CULLIN, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invente-d a new and Improved Machine for Securing Armature Windings, of which the following is a specification.

This invention relates to means for finally positioning and securing armature windings for electric motors and generators, and its object is to provide a simple, effective and reliable device for pressing-the windings down into the grooves in the armature core and at the same time cutting away the unnecessary parts of the insulating band which extends between these windings and the walls of the grooves.

Another object of this invention is to provide a simple and effective device of this character which will at the same time secure t-he ends of the windings in the slits in the ends of the segments of the co-mmutator which is mounted adjacent the core of the armature under operation.

In the accompanying drawings, Fig. 1 is an end elevation and Fig. 2 a front elevation of this improved device. Figs. 3 and 4 are diagrammatic views illustrating the operation of this device.

Similar reference characters refer to like parts throughoutv the several views.

The present machine has a base l adapted to be mounted on a support 2 and frames 3 and 4 extend upward from this base to support the bearings 5 for the main shaft 6. The frame 4 and the bracket 7 also support -the bearings for the countershaft 85,' On this countershaft are mounted the driving pulley 9 and the pinion 10, the latter meshing with the gear 12 on the main shaft 6. On the main shaft are secured the toothed roll' ers 13 and 14.

A screw-shaft 15 has a rigid collar 16 just below its upper screw-threaded end 17, and this screw-shaft is rotatably mounted in the base 1, a second adjustable collar 18 preventing upward movement thereof, and this screwsshaft may be turned by the handwheel 19 having radial external spokes 20 to raise or lower the roll carrier. The roll carrier is made up of a bottom 22 in which the nut 23 for the screw 17 is mounted, and two side anges 24 which support the bearings 25 for the shafts 26 of the two support- 1921. Serial N0. 485,714.

ing rollers 27. These supporting rollers are therefore movable up and down relative to the main shaft 6 by the shaft 15 and they are held parallel to the main shaft by the guide tongues 28 which extend into grooves in the bottom 22 of the roll carrier, these tongues being held in position by the screws 29.

As indicated in the several figures of the drawings, the armature to be operated upon consists of a core 31 of any desired construction mounted on a shaft 32 and having longitudinal grooves 33. A band 34 of insulation is laid into these grooves, as indicated in Fig. 3, and the windings 35 and 36 separated by insulation 37 are placed in these grooves, being insulated from the walls of the grooves b-y the insulation 34. The armature is slipped endwise into the machine onto the supporting rollers 27, after which the screw-shaft 15 is turned to press the armature against the toothed roller 13, the operator meanwhile slowly turning the armature so that the teeth 39 of this roller 13 may enter the grooves 33.

When the armature is forced up lthe full distance, these teeth 39 so closely lit into the grooves 33 that the insulating band 34 is sheared at the edges of the grooves and at the same time the windings 35 and 36 and the insulation 37 between them are forced down into proper position. When this insulating band is sheared at the edges of the grooves, the radially extending edges of the portions Iwithin the grooves are crimped in, as shown in Fig. 4, which edges` after the armature has been dipped in insulating varnish, secure the windings in position.

At the same time that the windings are pressed down into the grooves 33, the teeth of the roller 14 enter the notches 41 in the shoulders 42 of the segments 43 of the commutator of the armature and press the ends 44 of the windings down the desired distance, and at the same time so distort the outer parts of the walls of these notches as to prevent these windings from getting out again until they can be properly soldered in place. These teeth of the roller 14 are so positioned relative to the teeth 39 of the roller 13 that when the teeth 39 enter the grooves 33 the teeth of the roller 14 register with the notches 41.

Figs. 3 and 4 do not correspond to Fig. 2, for I have shown the commutator of much less diameter than the core, but this is done for the sake of clearness. In practice, however, these diameters vary greatly and the diameters of the rollers 13 and 14 must vary accordingly. p

As these machines may run at comparatively high speed, their capacity is great and the saving over hand Work isoonsiderable.

The details and. proportions of the various partsmay all be changed by those skilled in the art Without'departing from the'spirit of my invention as set forth in the following claims. Y

l claim A 1. In combination, a rotatable roller having longitudinal teeth, means to rotate the roller, a frame and means to move it up and down, and a pair of supporting rollers mounted in said frame With their axes below and parallel to said1 toothed roller.

2. vIn combination, a rotatable roller having longitudinal teeth, means to support and means to rotate said roller, a frame and a screw to move the frame up and down, and a pair of supporting rollers mounted in said frame with their axes belov7 and parallel to the toothed roller.

ln combination, a main frame, a main shaft rotatably mounted therein, means to rotate the shaft, a pair of toothedrollers mounted on the shaft, a second frame ver- Laaaeae tically movable in the irst, means to move the second shaft up and down, and a pair of supporting rollers rotatablymounted in the second frame, said rollers havin their axes parallel to the main shaft and a apted to support an armature core, the teeth on one of the rollers on the main shaft being adapted to fit into the grooves in said armature.

4. In combination, la rotatable roller having longitudinal teeth, means to rotate -the roller, a roller carrier and rollers rotatably mounted thereon to Support an armature, and means tocause the armature'and toothed roller to engage.,

5. In combination, a rotatable roller having longitudinal teeth, means to rotate the roller, a roller carrier and rollers rotatably mounted thereon to support an armature, and means to cause the armature and toothed roller to engage, said armature having longitudinal grooves and said roller having teeth spaced equallywith the grooves.

6. In combination, a' supporting frame. rollers mounted in said frame a'nd adapted to support an armature core having longitudinal grooves to receive windings, a member' having teeth `spaced to engage in said grooves, and means/to cause the teeth to enter said grooves` consecutively.

JASPER F. CULLIN. 

